Dumping-platform



(No Model.) 2 Sheets-Sheet 1. A. L. GRINNELL.

DUMPING PLATFORM.

N0. 360,436. Patented Apr. 5, 1887.

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%\ 6SMMM wmmb (No Model.) 2 Sheets-Sheet 2.

A. L. GRINNELL.

DUMPING PLATFORM.

No; 360,436. Patented Apr. 5, 1887.-

UNITED STATES PATENT OEEI E.

AMOS L. GRINNELL, OF CAMPBELL, IOWA.

'DUMPlNG-PLATFORM.

SPECIFICATION forming part of Letters Patent No. 360,436, dated April 5,3.887.

Application filed March 2S), 1856. Serial No. M1093.

To aZZ whom it may concern:

Be it known that I, Amos L. GRINNELL, a citizen of the United States ofAmerica, and a resident of Campbell, in the county of Polk and State ofIowa, have invented a new and useful Improvement in my Portable PlatformDump and Elevator, patented December 15, 1885, No. 332,65i, of which thefollowing is a specification.

My object is to reduce the elevation and upgrade of the inclines in theplatform, to facilitate driving on and oif with a wagon, and also -toelevate the front end of a wagon by a backward motion of the team andwagon, to facilitate emptying the contents of the wagon.

My invention consists in the combination of a hinged platform-section, aprop device, a pivoted wheel-scotch, and operating mechanism, ashereinafter set forth, and pointed out in the claims, andin such amanner that the hinged platform and scotch will be moved j ointly,and jointly backedin place, as required, to support a wagon, while its frontend is elevated to dump its contents out at its rear end.

Figure 1 of the accompanying drawings is a side view, Fig. 2 atransverse section, Fig. 3 a bottom View, and Fig. 4 a perspective view,of my improved platform.

A is a section of the floor hinged to the apex of the double-inclinedplatformf B is a prop device attached (preferably hinged) to the underside and lower edge of the section A in such a manner that when thesection is elevated to increase the length and posite edge of the frameand the end of the.

hinged section.

01 is a chain or rope fixed to the prop B and the lever in such a mannerthat a horizontal movement of the lever will pull the prop off the edgeof the open space in the floor, as required,to allow thehinged section Ato descend and close the opening.

(No modeL) f is a bearing fixed to the frame to support the free end ofthe lever G.

g is a wooden block or wheel-scotch pivoted on top of the floor, andnear one edge of the platform, to arrest the downward and rearwardmotion of the hind wheels of a wagon when the front wheels are rising onthe hinged and elevated section of the platform.

It is a rope or chain fixed to the free end of the scotchblock g and theend and free edge of the hinged section A in such a manner that when thehinged section is elevated it will pull the pivoted block around aquarter-revolution and across the track of the wagon-wheels and intoposition, as required, to scotch the rear wheel.

In the practical use of my improved platform, I close the hinged sectiondown and allow the pivoted wheel-scotch to swing back into its normalposition, or turn its free end downward, and then drive the team overthe platform to bring the front wheels over the apex and the wagon intoa level and stationary position. I next elevate the hinged section bymeans of a handle, 1', attached to its end, and allow the prop B tosupport it, and the rope h to draw the scotch 9 across the track of thewheels, and then back the team until the rear wheel is stopped by thescotch and the front wheels placed upon the hinged and elevated section,as shown in Fig. 1, and as required to dump the wagon. After the wagonis thus unloaded, I advance it into a level and stationary positionagain, and then close the hinged cover down,,and drive over it and offthe platform.

I claim as my invention- 1. A double inclined platform having a hingedsection at its apex, a prop device carried by the hinged section, apivoted lever connected with the prop device by means of a rope, and apivoted block or wheel-scotch connected with the hinged section by meansof a rope, constructed, arranged, and combined to operate in the mannerset forth, for the purposes stated.

2. The combination of the double-inclined platform, the hingedsection-A, a prop device, B, and the lever O, substantially as shown anddescribed, for the purposes specified.

3. The pivoted block 9 and rope d, in comnected with the hinged section,arranged and bination With the hinged section A at the combinedsubstantially as shown and de- [0 apex of the double-inclined platform,for the scribed, for the purposes stated. purpose stated.

T 4. A double-inclined platform having a AMOS GRINAELL hinged section,A, a prop device, B, flexibly Vitnesses:

connected with a pivoted lever, O, a lever- B. H. ORWIG,

bexrer, f, a pivoted scotch, g, flexibly con- THOMAS G. ORWIG.

